Search backend: Rename structural.StructuralSearch to structural.StructuralSearchJob
Created by: tbliu98
Stacked on https://github.com/sourcegraph/sourcegraph/pull/34908 Related to #34009 (closed)
Because structural.StructuralSearch
implements job.Job
, renaming it to structural.StructuralSearchJob
for clarity when reading the code and looking at traces.
Test plan
Semantics-preserving.